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Ambient-Stable Polymeric Nitrogen Achieved through Multi-Stage Computational Design
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作者 Jiani Lin Jianfu Li +2 位作者 Yong Liu Jianan Yuan Xiaoli Wang 《Chinese Physics Letters》 2025年第7期298-309,共12页
The four-decade quest for synthesizing ambient-stable polymeric nitrogen,a promising high-energy-density material,remains an unsolved challenge in materials science.We develop a multi-stage computational strategy empl... The four-decade quest for synthesizing ambient-stable polymeric nitrogen,a promising high-energy-density material,remains an unsolved challenge in materials science.We develop a multi-stage computational strategy employing density functional tight-binding-based rapid screening combined with density functional theory refinement and global structure searching,effectively bridging computational efficiency with quantum accuracy.This integrated approach identifies four novel polymeric nitrogen phases(Fddd,P3221,I4m2,and𝑃P6522)that are thermodynamically stable at ambient pressure.Remarkably,the helical𝑃6522 configuration demonstrates exceptional thermal resilience up to 1500 K,representing a predicted polymeric nitrogen structure that maintains stability under both atmospheric pressure and high-temperature extremes.Our methodology establishes a paradigm-shifting framework for the accelerated discovery of metastable energetic materials,resolving critical bottlenecks in theoretical predictions while providing experimentally actionable targets for polymeric nitrogen synthesis. 展开更多
关键词 ambient stable polymeric nitrogen polymeric nitrogen density functional tight binding density functional theory density functional theory refinement global structure searching global structure searchingeffectively bridging computational efficiency quantum accuracythis
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Roles of extracellular polymeric substances in arsenic accumulation and detoxification by cell wall intact and mutant strains of Chlamydomonas reinhardtii 被引量:1
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作者 Sadiq Naveed Qingnan Yu +3 位作者 Katarzyna Szewczuk-Karpisz Chunhua Zhang Shafeeq-Ur Rahman Ying Ge 《Journal of Environmental Sciences》 2025年第6期142-154,共13页
Arsenic(As)pollution seriously threatens human and ecological health.Microalgal cell wall and extracellular polymeric substances(EPS)are known to interactwith As,but their roles in the As resistance,accumulation and s... Arsenic(As)pollution seriously threatens human and ecological health.Microalgal cell wall and extracellular polymeric substances(EPS)are known to interactwith As,but their roles in the As resistance,accumulation and speciation inmicroalgae remain unclear.Here,we used two strains of Chlamydomonas reinhardtii,namely CC-125(wild type)and CC-503(cell walldeficientmutant),to examine the algal growth,EPS synthesis,As adsorption,absorption and transformation under 10–1000μg/L As(III)and As(V)treatments for 96 h.In both strains,the As absorption increased after the EPS removal,but the growth,As adsorption,and transformation of C.reinhardtii declined.The CC-125 strain was more tolerant to As stress and more efficient in EPS production,As accumulation,and redox transformation than CC-503,irrespective of EPS presence or absence.Three-dimension excitation-emission matrix(3DEEM)and attenuated total reflectance infrared spectroscopy(ATR-IR)analyses showed that As was bound with functional groups in the EPS and cell wall,such as-COOH,NH and-OH in proteins,polysaccharides and amino acids.Together,this study demonstrated that EPS and cell wall acted as barriers to lower the As uptake by C.reinhardtii.However,the cell wall mutant strain wasmore susceptible to As toxicity due to lower EPS induction and higher As absorption. 展开更多
关键词 Extracellular polymeric substances Cell wall ARSENIC ACCUMULATION Speciation MICROALGAE
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Polymeric nanocarriers for therapeutic gene delivery 被引量:1
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作者 Jiayuan Zhang Xinyu Yang +3 位作者 Zhichao Chang Wenwei Zhu Yuhua Ma Haisheng He 《Asian Journal of Pharmaceutical Sciences》 2025年第1期1-25,共25页
The recent commercialization of gene products has sparked significant interest in gene therapy,necessitating efficient and precise gene delivery via various vectors.Currently,viral vectors and lipid-based nanocarriers... The recent commercialization of gene products has sparked significant interest in gene therapy,necessitating efficient and precise gene delivery via various vectors.Currently,viral vectors and lipid-based nanocarriers are the predominant choices and have been extensively investigated and reviewed.Beyond these vectors,polymeric nanocarriers also hold the promise in therapeutic gene delivery owing to their versatile functionalities,such as improving the stability,cellar uptake and endosomal escape of nucleic acid drugs,along with precise delivery to targeted tissues.This review presents a brief overview of the status quo of the emerging polymeric nanocarriers for therapeutic gene delivery,focusing on key cationic polymers,nanocarrier types,and preparation methods.It also highlights targeted diseases,strategies to improve delivery efficiency,and potential future directions in this research area.The review is hoped to inspire the development,optimization,and clinical translation of highly efficient polymeric nanocarriers for therapeutic gene delivery. 展开更多
关键词 polymeric nanocarriers Therapeutic gene delivery Cationic polymers DISEASES Transfection efficiency STRATEGIES
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Molecular dynamics insights into wax formation-How polymeric inhibitors shape crude oil flow
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作者 Wyclif Kiyingi Ji-Xiang Guo +1 位作者 Rui-Ying Xiong Chen-Hao Gao 《Petroleum Science》 2025年第5期2233-2245,共13页
Molecular-level interactions between polymeric inhibitors and wax crystals are essential for mitigating wax deposition in crude oils,a major operational and environmental challenge.This study investigates the mechanis... Molecular-level interactions between polymeric inhibitors and wax crystals are essential for mitigating wax deposition in crude oils,a major operational and environmental challenge.This study investigates the mechanisms by which specific inhibitors target wax crystals to prevent aggregation.Extracted wax and inhibitor were characterized using gas chromatography,X-ray diffraction,and spectroscopy to determine the molecular structures.The wax primarily comprised of straight-chain nC28 alkanes,while the inhibitor was an ethylene/vinyl acetate copolymer.Rheological tests demonstrated a reduced gelation point upon inhibitor addition.Molecular dynamics(MD)simulations,performed using the COMPASS II force field,revealed interactions at the molecular level.Structural validation of molecules was done through comparative analysis of the experimental infrared and simulated vibrational analysis spectra whereas that of the rhombohedral wax crystal was achieved using the Pawley method,yielding a Profile R-factor of 9.26%.Morphological studies revealed five symmetrically unique facets,with the(110)plane being the fastestgrowing due to its inter-planar distance and attachment energy(-157.25 kcal/mol).Adsorption energy calculations(-180 kcal/mol)confirmed that the inhibitor effectively disrupted crystal growth on the surface by adsorbing its polar section onto the wax surface while repelling the non-polar groups,thereby reducing waxaggregation. 展开更多
关键词 Molecular dynamics COLLOIDS Crystal growth Adsorption energy polymeric inhibitor
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Recent advances in electrochemiluminescence based on polymeric luminophores
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作者 Sijia Zhou Tianyi Zhou +5 位作者 Yuhua Hou Wang Li Yanfei Shen Songqin Liu Kaiqing Wu Yuanjian Zhang 《Chinese Chemical Letters》 2025年第5期109-123,共15页
Developing efficient,non-toxic,and low-cost emitters is a key issue in promoting the applications of electrochemiluminescence(ECL).Among varied ECL emitters,polymeric emitters are attracting dramatically increasing in... Developing efficient,non-toxic,and low-cost emitters is a key issue in promoting the applications of electrochemiluminescence(ECL).Among varied ECL emitters,polymeric emitters are attracting dramatically increasing interest due to tunable structure,large surface area,brilliant transfer capability,and sustainable raw materials.In this review,we present a general overview of recent advances in developing polymeric luminophores,including their structural and synthetic methodologies.Methods rooted in straightforward unique structural modulation have been comprehensively summarized,aiming at enhancing the efficiency of ECL along with the underlying kinetic mechanisms.Moreover,as several conjugated polymers were just discovered in recent years,promising prospects and perspectives have also been deliberated.The insight of this review may provide a new avenue for helping develop advanced conjugated polymer ECL emitters and decode ECL applications. 展开更多
关键词 ELECTROCHEMILUMINESCENCE polymeric luminophores MECHANISMS EFFICIENCY
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Photoswitchable dual-color fluorescent polymeric nanoparticles for self-erased time-resolved information encryption and anti-counterfeiting
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作者 Hong Wang Yong Tian +4 位作者 Tiancheng Wu Shun He Jiaxi Cui Jian Chen Xudong Chen 《Chinese Chemical Letters》 2025年第7期468-472,共5页
Photoswitchable fluorescent polymeric nanoparticles were widely concerned because of their excellent features including the flexible design,easy preparation and functionalization,and thus exhibited great application p... Photoswitchable fluorescent polymeric nanoparticles were widely concerned because of their excellent features including the flexible design,easy preparation and functionalization,and thus exhibited great application potential in information encryption,anti-counterfeiting,but remained challenging in improving the security.Herein,we described a self-erased time-resolved information encryption via using photoswitchable dual-color fluorescent polymeric nanoparticles(PDFPNs)containing two fluorescence dyes(blue and red)and photochromic spiroxazine derivatives.In view of the different thermo-induced isomerization rates of photochromic spiroxazine derivatives in different flexible substrates,the decoloration rate of PDFPNs can be programmatically tuned by regulating ratio between rigid polymer and flexible polymer.Therefore,after ultraviolet light(UV)irradiation,correct information could only be recognized in preestablished time during the self-erased process.Our results indicated that PDFPNs exhibited fast photo-responsibility(2 min),high fluorescence contrast,well-pleasing photo-reversibility(>20 times),and programmable thermo-responsiveness(24 s-6 h).We thus demonstrated their application in the selferased time-resolved information encryption and anti-counterfeiting with high security. 展开更多
关键词 Photoswitchable dual-color fluorescence polymeric nanoparticles FRET Self-erasure Time-resolved information encryption
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Polymeric micelle-hydrogel composites design for biomedical applications
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作者 Hongyi Li Huiyun Wen +7 位作者 He Zhang Jin Li Xiang Cao Jiaqing Zhang Yutao Zheng Saipeng Huang Weiming Xue Xiaojun Cai 《Chinese Chemical Letters》 2025年第5期74-81,共8页
Designing advanced hydrogels with controlled mechanical properties,drug delivery manner and multifunctional properties will be beneficial for biomedical applications.However,the further development of hydrogel is limi... Designing advanced hydrogels with controlled mechanical properties,drug delivery manner and multifunctional properties will be beneficial for biomedical applications.However,the further development of hydrogel is limited due to its poor mechanical property and structural diversity.Hydrogels combined with polymeric micelles to obtain micelle-hydrogel composites have been designed for synergistic enhancement of each original properties.Incorporation polymeric micelles into hydrogel networks can not only enhance the mechanical property of hydrogel,but also expand the functionality of hydrogel.Recent advances in polymeric micelle-hydrogel composites are herein reviewed with a focus on three typical micelle incorporation methods.In this review,we will also highlight some emerging biomedical applications in developing micelle-hydrogel composite with multiple functionalities.In addition,further development and application prospects of the micelle-hydrogels composites have also been addressed. 展开更多
关键词 polymeric micelle Hydrogel composites Incorporation methods Biomedical applications Local tumor treatment Tissue engineering
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Design-simulation-manufacturing-assessment framework for geometric optimization of polymeric heart valves toward enhanced durability
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作者 Tianle Xu Zihan Zhu +3 位作者 Yunhan Cai Shunping Chen Jia Guo Shengzhang Wang 《Bio-Design and Manufacturing》 2025年第5期835-846,I0067-I0068,共14页
Owing to their excellent biocompatibility and potential for durability enhancement,polymeric heart valves(PHVs)are emerging as a promising alternative to traditional prostheses.Unlike conventional materials,PHVs can b... Owing to their excellent biocompatibility and potential for durability enhancement,polymeric heart valves(PHVs)are emerging as a promising alternative to traditional prostheses.Unlike conventional materials,PHVs can be manufactured under precise design criteria,enabling targeted performance improvements.This study introduces a geometric optimization strategy for enhancing the durability of PHVs.The finite element method(FEM)is combined with a dip-molding technique to develop a novel polymeric aortic valve with improved mechanical properties.The tri-leaflet geometry is parameterized using B-spline curves,and the maximum stress in the valve is reduced from 2.4802 to 1.7773 MPa using a multiobjective optimization algorithm NSGA-II(non-dominated sorting genetic algorithm II).Pre-optimized and optimized valve prototypes were fabricated via dip-molding and evaluated during pulsatile-flow tests and accelerated wear tests.The optimized design meets the ISO 5840 standards,with an effective orifice area of 2.019 cm^(2),a regurgitant fraction of 5.693%,and a transvalvular pressure gradient of 7.576 mmHg.Moreover,the optimized valve maintained its structural integrity and functionality over 14 million cycles of the accelerated wear test,whereas the unoptimized valve failed after two million cycles.These findings confirm that the FEM-based geometric optimization method enhances both the mechanical performance and durability of PHVs. 展开更多
关键词 polymeric heart valve DURABILITY Optimization Finite element method(FEM) Dip-molding
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Polymeric carbon nitride for photocatalytic overall water splitting:Modification strategies and recent advances
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作者 Anna Dai Zhenxiong Huang +3 位作者 Li Tian Zheng Zhang Xiangjiu Guan Liejin Guo 《Chinese Journal of Structural Chemistry》 2025年第8期88-100,共13页
Solar-driven photocatalytic overall water splitting(POWS)has emerged as a sustainable pathway for hydrogen production,yet faces intrinsic challenges in developing robust catalysts that balance efficiency,stability,and... Solar-driven photocatalytic overall water splitting(POWS)has emerged as a sustainable pathway for hydrogen production,yet faces intrinsic challenges in developing robust catalysts that balance efficiency,stability,and cost-effectiveness.Polymeric carbon nitride(PCN)represents as a promising metal-free photocatalyst for hydrogen production due to the merits of unique electronic structure and exceptional thermal stability.Nevertheless,limited by rapid charge recombination and insufficient oxidative capability,little success has been achieved on pristine PCN photocatalyst in POWS.In this context,recent advances have demonstrated multi-dimensional modification strategies for improving POWS performance.Based on the fundamental principles of photocatalysis,this review discusses the advantages and challenges of PCN-based photocatalysts in POWS systems.With critical evaluation on one-step excitation systems and Z-scheme two-step excitation systems,modification strategies including crystallinity engineering,supramolecular precursor design,cocatalyst modulation,and construction of PCN-based heterojunctions and homojunctions were highlighted by introducing representative advances in POWS application over the past five years.Future perspectives for PCN-based photocatalysts are proposed,aiming to provide new insights for the design of advanced photocatalytic system for efficient POWS. 展开更多
关键词 PHOTOCATALYSIS Overall water splitting Hydrogen production polymeric carbon nitride Modification strategies
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Research Progress in the Polymeric Nitrogen with High Energy Density
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作者 Jie Zhang Guo Chen +2 位作者 Chengfeng Zhang Yuxuan Xu Xianlong Wang 《Chinese Physics Letters》 2025年第5期69-79,共11页
Polymeric nitrogen is a potential high-energy-density material with the advantages of high energy density, easy availability of raw materials, and non-pollution. The design and synthesis of polymeric nitrogen are impo... Polymeric nitrogen is a potential high-energy-density material with the advantages of high energy density, easy availability of raw materials, and non-pollution. The design and synthesis of polymeric nitrogen are important in the research field of energetic materials. The cubic gauche nitrogen was successfully synthesized at high pressure in the diamond anvil cell, which stimulated the theoretical and experimental investigations. To date, several hundred kinds of polymeric nitrogen have been reported. This review introduces the progressive development of polymeric nitrogen with high energy density, the challenges faced by the synthesized polymeric nitrogen under high-pressure,and the importance to improve the stability of polymeric nitrogen at ambient pressure. Furthermore, alternative methods for synthesizing polymeric nitrogen under moderate conditions are also presented. In this field, more efforts are needed to develop strategies for stabilizing more polymeric nitrogen to ambient conditions, especially the stability of free surfaces. 展开更多
关键词 polymeric nitrogen cubic gauche nitrogen theoretical experimental investigations energetic materials raw materials design synthesis high energy density diamond anvil cell
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Harnessing S-scheme junctions for enhanced CO_(2) photoreduction:molecular bonding of copper(Ⅱ)complexes onto K-doped polymeric carbon nitride via microwave heating
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作者 Ming-Yu Heng Hong-Lei Shao +5 位作者 Jie-Ting Sun Qian Huang Shu-Ling Shen Guang-Zhi Yang Yu-Hua Xue Shu-Ning Xiao 《Rare Metals》 2025年第2期1108-1121,共14页
Photocatalytic conversion of CO_(2) is pivotal for mitigating the global greenhouse effect and fostering sustainable energy development.Nowadays,polymeric carbon nitride(PCN)has gained widespread application in CO_(2)... Photocatalytic conversion of CO_(2) is pivotal for mitigating the global greenhouse effect and fostering sustainable energy development.Nowadays,polymeric carbon nitride(PCN)has gained widespread application in CO_(2) solar reduction due to its excellent visible light response,suitable conduction band position,and good cost-effectiveness.However,the amorphous nature and low conductivity of PCN limit its photocatalytic efficiency by leading to low carrier concentrations and facile electron–hole recombination during photocatalysis.Addressing this bottleneck,in this study,potassium-doped PCN(KPCN)/copper(Ⅱ)-complexed bipyridine hydroxyquinoline carboxylic acid(Cu(Ⅱ)(bpy)(H_(2)hqc))composite catalysts were synthesized through a multistep microwave heating process.In the composite,the formation of an S-scheme junction facilitates the enrichment of more negative electrons on the conduction band of KPCN via intermolecular electron–hole recombination between Cu(Ⅱ)(bpy)(H_(2)hqc)(CuPyQc)and KPCN,thereby promoting efficient photoreduction of CO_(2) to CO.Microwave heating enhances the amidation reaction between these two components,achieving the immobilization of homogeneous molecular catalysts and forming amidation chemical bonds that serve as key channels for the S-scheme charge transfer.This work not only presents a new PCN-based catalytic system for CO_(2) reduction applications,but also offers a novel microwave-practical approach for immobilizing homogeneous catalysts. 展开更多
关键词 Photocatalytic CO_(2)reduction Microwave synthesis polymeric carbon nitride Amide bond Sscheme
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Microbial community and dynamic changes of extracellular polymeric substances in relation to plastisphere of disposable surgical masks in natural aquatic environment
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作者 Ling ZHANG Yuxin ZHOU +6 位作者 Zixian ZHU Feifei YAN Luxi TAN Chunyan WEI Zihao WANG Qingfeng CHEN Ying ZHANG 《Journal of Oceanology and Limnology》 2025年第2期502-514,共13页
In the context of global COVID-19 epidemic preparedness,the extensive use of disposable surgical masks(DSM)may lead to its emergence as a main new source of microplastics in the environment.Nowadays,DSMs have become a... In the context of global COVID-19 epidemic preparedness,the extensive use of disposable surgical masks(DSM)may lead to its emergence as a main new source of microplastics in the environment.Nowadays,DSMs have become a non-negligible source of plastic waste in aquatic environment,however,less research has been done on DSM after biofilm colonization in freshwater environment.The study investigated the microbial community of DSM-associated biofilms by 16S rRNA gene sequencing.Analysis of the microbial community in the middle and inner/outer layers of the DSM showed that the middle layer was different from the remaining two layers and that potential pathogens were enriched only in the middle layer of the DSM.Herein,we focused on the middle layer and explored the characterization properties and extracellular polymeric substances(EPS)components changes during biofilm formation.The results showed that the EPS components varied with the biofilm incubation time.As the formation of biofilm,the protein(PN)and polysaccharide(PS)in EPS showed an overall increasing trend,and the growth of PS was well synchronized with PN.Three fluorescent components of EPS were determined by the three-dimensional excitation emission matrix(3D-EEM),including humic acid-like,fulvic acid-like,and aromatic protein-like components.The percentage of fluorescent components varied with increasing biofilm development time and then stabilized.Fourier transform infrared spectroscopy(FTIR)characterization results elucidated the emergence of oxygen-containing functional groups during biofilm formation.Moreover,the hydrophilicity increased with biofilm development.In conclusion,the environmental behavior and ecological risks of DSM in aquatic environment deserve urgent attention in future studies. 展开更多
关键词 BIOFILM disposable surgical masks(DSM) extracellular polymeric substances(EPS) microbial community plastisphere
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Organic solvent nanofiltration polymeric membranes:Recent progress,applications,challenges,and perspectives
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作者 Qianwen Su Xiuming Zhang +1 位作者 Daohui Zhao Ming Li 《Chinese Journal of Chemical Engineering》 2025年第6期196-208,共13页
Organic solvent nanofiltration(OSN) is an efficient,low-energy and environmentally friendly phase-free separation process.Obviously,the core of OSN lies in the fabrication of solvent-resistant nanofiltration membranes... Organic solvent nanofiltration(OSN) is an efficient,low-energy and environmentally friendly phase-free separation process.Obviously,the core of OSN lies in the fabrication of solvent-resistant nanofiltration membranes.Although membrane materials reported in the literature such as 2D membranes,porous organic cages,etc.have the potential for ultra-high performance,polymeric membranes provide key advantages in mass production and processability.Therefore,this review focuses on polymeric materials for OSN.This review summarizes the recent progress of polymeric materials,including emerging and traditional polymeric membranes.Then,a summary of recent progress about strategies developed for perm-selective nanofilms are presented,followed by a brief overview of commercial membrane technology for OSN.Finally,major challenges of OSN and future research directions are presented.Close interaction between the academic research and practical application would help improve greener and more sustainable manufacturing processes. 展开更多
关键词 Organic solvent nanofiltration(OSN) Molecular separation Porous materials Solvent-resistant polymeric membranes Commercial applications
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Tumor microenvironment-sensitive polymeric nanoparticles for synergetic chemo-photo therapy 被引量:3
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作者 Tingting Hu Chao Shen +2 位作者 Xueyan Wang Fengbo Wu Zhiyao He 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第11期44-56,共13页
Nanoparticles that employ stimuli-responsive polymeric delivery carriers have emerged as intelligent nanoplatforms with great potential in cancer theranostics,mainly including cancer diagnosis,controlled/triggered dru... Nanoparticles that employ stimuli-responsive polymeric delivery carriers have emerged as intelligent nanoplatforms with great potential in cancer theranostics,mainly including cancer diagnosis,controlled/triggered drug delivery,and real-time monitoring of therapeutic response.Particularly,tumor microenvironment(TME)-responsive polymeric nanocarriers in response to weak acidity,hypoxia,reactive oxygen species(ROS),glutathione(GSH),or tumor enzymes in the TME show great promise in facilitating tumor accumulation,enhancing tumor penetration,prolonging tumor retention,and achieving controlled drug release,thereby improving the efficiency of tumor therapy.Besides,the combination of chemotherapy and phototherapy presents a promising endeavor for the treatment of tumors,which allows for the integration of the advantages of each treatment modality,addressing the shortcomings of the two methods,and amplifying the efficacy of tumor treatment while reducing adverse reactions.This review focuses on the latest progress in the development of TME-responsive polymeric nanoparticles for synergetic chemo-photo therapy,and discusses the critical challenges and future considerations involved in the fabrication of TME-responsive nanocarriers. 展开更多
关键词 polymeric nanoparticles Tumor microenvironment-sensitive CHEMOTHERAPY Photothermal therapy photodynamic therapy Combination therapy
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Design of multifunctional polymeric binders in silicon anodes for lithium‐ion batteries 被引量:3
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作者 Masytha Nuzula Ramdhiny Ju‐Won Jeon 《Carbon Energy》 SCIE EI CAS CSCD 2024年第4期140-163,共24页
Silicon(Si)is a promising anode material for lithium‐ion batteries(LIBs)owing to its tremendously high theoretical storage capacity(4200 mAh g−1),which has the potential to elevate the energy of LIBs.However,Si anode... Silicon(Si)is a promising anode material for lithium‐ion batteries(LIBs)owing to its tremendously high theoretical storage capacity(4200 mAh g−1),which has the potential to elevate the energy of LIBs.However,Si anodes exhibit severe volume change during lithiation/delithiation processes,resulting in anode pulverization and delamination with detrimental growth of solid electrolyte interface layers.As a result,the cycling stability of Si anodes is insufficient for commercialization in LIBs.Polymeric binders can play critical roles in Si anodes by affecting their cycling stability,although they occupy a small portion of the electrodes.This review introduces crucial factors influencing polymeric binders'properties and the electrochemical performance of Si anodes.In particular,we emphasize the structure–property relationships of binders in the context of molecular design strategy,functional groups,types of interactions,and functionalities of binders.Furthermore,binders with additional functionalities,such as electrical conductivity and self‐healability,are extensively discussed,with an emphasis on the binder design principle. 展开更多
关键词 CONDUCTIVITY lithium‐ion batteries molecular interactions polymeric binders self‐healability Si anodes
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STAT3-Dependent Effects of Polymeric Immunoglobulin Receptor in Regulating Interleukin-17 Signaling and Preventing Autoimmune Hepatitis 被引量:1
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作者 Ting Li Tongtong Pan +14 位作者 Nannan Zheng Xiong Ma Xiaodong Wang Fang Yan Huimian Jiang Yuxin Wang Hongwei Lin Jing Lin Huadong Zhang Jia Huang Lingming Kong Anmin Huang Qingxiu Liu Yongping Chen Dazhi Chen 《Engineering》 SCIE EI CAS CSCD 2024年第5期209-222,共14页
One-third of patients with autoimmune hepatitis(AIH)have cirrhosis at the time of diagnosis.The relevance of these variables,although unknown,is believed to be critical in AIH because of suspected interactions between... One-third of patients with autoimmune hepatitis(AIH)have cirrhosis at the time of diagnosis.The relevance of these variables,although unknown,is believed to be critical in AIH because of suspected interactions between the gut microbiome and genetic factors.Dysbiosis of the gut flora and elevated polymeric immunoglobulin receptor(pIgR)levels have been observed in both patients and mouse models.Moreover,there is a direct relationship between pIgR expression and transaminase levels in patients with AIH.In this study,we aimed to explore how pIgR influences the secretion of regenerating islet-derived 3 beta(Reg3b)and the flora composition in AIH using in vivo experiments involving patients with AIH and a concanavalin A-induced mouse model of AIH.Reg3b expression was reduced in pIgR gene(Pigr)-knockout mice compared to that in wild-type mice,leading to increased microbiota disruption.Conversely,exogenous pIgR supplementation increased Reg3b expression and maintained microbiota homeostasis.RNA sequencing revealed the participation of the interleukin(IL)-17 signaling pathway in the regulation of Reg3b through pIgR.Furthermore,the introduction of external pIgR could not restore the imbalance in gut microbiota in AIH,and the decrease in Reg3b expression was not apparent following the inhibition of signal transducer and activator of transcription 3(STAT3).In this study,pIgR facilitated the upregulation of Reg3b via the STAT3 pathway,which plays a crucial role in preserving the balance of the intestinal microbiota in AIH.Through this research,we discovered new molecular targets that can be used for the diagnosis and treatment of AIH. 展开更多
关键词 Autoimmune hepatitis polymeric immunoglobulin receptor Regenerating islet-derived 3 beta Intestinal microbiota Signal transducer and activator of transcription 3
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Fluoride removal from coal mining water using novel polymeric aluminum modified activated carbon prepared through mechanochemical process
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作者 Yixiang Bao Yonghui Qi +10 位作者 Qiao Li Lei Wang Zhiguo Cao Jie Li Min Wu Jun Chen Haiqin Zhang Qiang Guo Binbin Jiang Jinkui Zhong Jingfeng Li 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2024年第12期226-236,共11页
Defluoridation of coal mining water is of great significance for sustainable development of coal industry in western China.A novel one-step mechanochemical method was developed to prepare polymeric aluminum modified p... Defluoridation of coal mining water is of great significance for sustainable development of coal industry in western China.A novel one-step mechanochemical method was developed to prepare polymeric aluminum modified powder activated carbon(PAC)for effective fluoride removal from coal mining water.Aluminum was stably loaded on the PAC through facile solid-phase reaction between polymeric aluminum(polyaluminum chloride(PACl)or polyaluminum ferric chloride(PAFC))and PAC(1:15 W/W).Fluoride adsorption on PACl and PAFC modified PAC(C-PACl and C-PAFC)all reached equilibrium within 5 min,at rate of 2.56 g mg^(-1)sec^(-1)and 1.31 g mg^(-1)sec^(-1)respectively.Larger increase of binding energy of Al on C-PACl(Al–F bond:76.64 eV and Al–FOH bond:77.70 eV)relative to that of Al on C-PAFC(Al–F bond:76.52 eV)explained higher fluoride uptake capacity of C-PACl.Less chloride was released from C-PACl than that from C-PAFC due to its higher proportion of covalent chlorine and lower proportion of ionic chlorine.The elements mapping and atomic composition proved the stability of Al loaded on the PAC as well as the enrichment of fluoride on both CPACl and C-PAFC.The Bader charge,formation energy and bond length obtained from DFT computational results explained the fluoride adsorption mechanism further.The carbon emission was 7.73 kg CO_(2)-eq/kg adsorbent prepared through mechanochemical process,which was as low as 1:82.3 to 1:8.07×10^(4)compared with the ones prepared by conventional hydrothermal methods. 展开更多
关键词 FLUORIDE Adsorption MECHANOCHEMISTRY polymeric aluminum Powder activated carbon
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One-step synthesis of cubic gauche polymeric nitrogen with high yield just by heating
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作者 Liangfei Wu Yuxuan Xu +4 位作者 Guo Chen Junfeng Ding Ming Li Zhi Zeng Xianlong Wang 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第12期127-129,共3页
A high-efficient one-step synthesis of cubic gauche polymeric nitrogen was developed just by thermal treatment of KN3powders.Raman and infrared spectra confirm the formation of cubic gauche polymeric nitrogen.Further ... A high-efficient one-step synthesis of cubic gauche polymeric nitrogen was developed just by thermal treatment of KN3powders.Raman and infrared spectra confirm the formation of cubic gauche polymeric nitrogen.Further thermogravimetric differential scanning calorimeter measurements show that the content of cubic gauche polymeric nitrogen is as high as 1.5 wt%with high thermal stability,which is the highest content value reported so far. 展开更多
关键词 cg-N thermal treatment polymeric nitrogen high-energy-density materials KN_(3)
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Preparation and performance evaluation of the slickwater using novel polymeric drag reducing agent with high temperature and shear resistance ability
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作者 Ming-Wei Zhao Zhen-Feng Ma +5 位作者 Cai-Li Dai WeiWu Yong-Quan Sun Xu-Guang Song Yun-Long Cheng Xiang-Yu Wang 《Petroleum Science》 SCIE EI CAS CSCD 2024年第2期1113-1121,共9页
Slickwater fracturing fluids are widely used in the development of unconventional oil and gas resources due to the advantages of low cost,low formation damage and high drag reduction performance.However,their performa... Slickwater fracturing fluids are widely used in the development of unconventional oil and gas resources due to the advantages of low cost,low formation damage and high drag reduction performance.However,their performance is severely affected at high temperatures.Drag reducing agent is the key to determine the drag reducing performance of slickwater.In this work,in order to further improve the temperature resistance of slickwater,a temperature-resistant polymeric drag reducing agent(PDRA)was synthesized and used as the basis for preparing the temperature-resistant slickwater.The slickwater system was prepared with the compositions of 0.2 wt%PDRA,0.05 wt%drainage aid nonylphenol polyoxyethylene ether phosphate(NPEP)and 0.5 wt%anti-expansion agent polyepichlorohydrindimethylamine(PDM).The drag reduction ability,rheology properties,temperature and shear resistance ability,and core damage property of slickwater were systematically studied and evaluated.In contrast to on-site drag reducing agent(DRA)and HPAM,the temperature-resistant slickwater demonstrates enhanced drag reduction efficacy at 90℃,exhibiting superior temperature and shear resistance ability.Notably,the drag reduction retention rate for the slickwater achieved an impressive 90.52%after a 30-min shearing period.Additionally,the core damage is only 5.53%.We expect that this study can broaden the application of slickwater in high-temperature reservoirs and provide a theoretical basis for field applications. 展开更多
关键词 Unconventional resources polymeric drag reducing agent Slickwater High drag reduction rate Temperature resistance
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Alkali Metal Ion Substituted Carboxymethyl Cellulose as Anode Polymeric Binders for Rapidly Chargeable Lithium-Ion Batteries
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作者 Seoungwoo Byun Zhu Liu +9 位作者 Dong Ok Shin Kyuman Kim Jaecheol Choi Youngjoon Roh Dahee Jin Seungwon Jung Kyung-Geun Kim Young-Gi Lee Stefan Ringe Yong Min Lee 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2024年第1期77-82,共6页
The increasing demand for short charging time on electric vehicles has motivated realization of fast chargeable lithium-ion batteries(LIBs).However,shortening the charging time of LIBs is limited by Li^(+)intercalatio... The increasing demand for short charging time on electric vehicles has motivated realization of fast chargeable lithium-ion batteries(LIBs).However,shortening the charging time of LIBs is limited by Li^(+)intercalation process consisting of liquid-phase diffusion,de-solvation,SEI crossing,and solid-phase diffusion.Herein,we propose a new strategy to accelerate the de-solvation step through a control of interaction between polymeric binder and solvent-Li^(+)complexes.For this purpose,three alkali metal ions(Li^(+),Na^(+),and K^(+))substituted carboxymethyl cellulose(Li-,Na-,and K-CMC)are prepared to examine the effects of metal ions on their performances.The lowest activation energy of de-solvation and the highest chemical diffusion coefficient were observed for Li-CMC.Specifically,Li-CMC cell with a capacity of 3 mAh cm^(-2)could be charged to>95%in 10 min,while a value above>85%was observed after 150 cycles.Thus,the presented approach holds great promise for the realization of fast charging. 展开更多
关键词 de-solvation digital twins fast charging graphite anodes polymeric binders
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